Respuesta :
2.52= per half gallon
2.52* 2= 5.04
5.04 per gallon
5.04*4= 20.16
so 4 gallons of organic milk = $20.16
2.52* 2= 5.04
5.04 per gallon
5.04*4= 20.16
so 4 gallons of organic milk = $20.16